Carbon Black in the Oxidation of Butadiene-Styrene Vulcanizates

Carbon black as an elastomer antioxidant. I. Effect of vulcanizing systems in SBR

“…Effects of carbon black on oxidation of rubber have been the subject of several investigations (2)(3)(4)(5)(6)(7)(8)(9)(10). The consensus of these was that carbon black acts a s an inhibitor in the raw polymer (3,s) or in peroxide vulcanizates (8-10) but as a "prooxidant" in sulfur vulcanizates (2-4, 6,7).…”

About thermo-oxidative ageing at moderate temperature of conventionally vulcanized natural rubber

“…He reported that thermal ageing, performed below 80°C does not significantly change elastic active chains (EAC) density while oxidative ageing strongly increases it. All the samples studied were filled, but the possible influence of the fillers on the oxidation rate [22], [23] was not taken into account in the discussion, which hinders any definitive conclusion on the mechanisms involved in the matrix alone. Besides, using only mechanical tests, he could not dissociate them, neither he evaluated their different contribution.…”